On 27 Feb 2015, at 04:40, Bruce Kellett wrote:
Jason Resch wrote:
On Thu, Feb 26, 2015 at 9:20 PM, Bruce Kellett <[email protected]
<mailto:[email protected]>> wrote:
Jason Resch wrote:
There's no problem defining probability. There is, however, a
big problem defining collapse.
Collapse is easily defined. So at what point does it happen?
What triggers it?
On what scales can and can't it happen?
How do you define a measurement? An observer?
How is a measuring apparatus or an observer different from any
other physical object?
What is the special property of the observer / measuring device
that enables it to collapse the wave function?
If you have an observer who himself is isolated from an external
environment, can he collapse the wave function? Or can only you
collapse him by observing him?
All these questions are rendered irrelevant if you take the view
that the wave function is purely a device for calculating
probabilities, not something that has a real, independent existence.
In other words, the epistemic interpretation of QM. There is nothing
physical to collapse -- we are dealing solely with classical
probabilities.
OK, but then we are back again close to computationalism: this entails
physics is branch of machine's epistemology, taking the FPI into
account. But then we have to justify the SWE too, only by the FPI +
computer science, or abandon computationalism.
Bruno
Bruce
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